[Boost-users] [boost.function] member function object problem

From: Olaf Peter (ope-devel_at_[hidden])
Date: 2008-08-08 14:14:49

Hi,

I perform some tests and run into problems. The following code doesn't
compile:

---8<---
#include <boost/python.hpp>

namespace python = boost::python;

struct My {
  void exec_test() { }
};

int main()
{
  Py_Initialize();

  boost::function<void (My*)> exec_test = &My::exec_test; //L13

  My my;

  if (python::handle_exception(exec_test(&my))) {
    if (PyErr_Occurred()) {
        PyErr_Print();
    }
  }

  return 0;
}
--->8---

$ LANG=en g++ -I /usr/include/python2.5 python_embedded.cpp -o
python_embedded -l python2.5 -l boost_python
python_embedded.cpp: In function 'int main()':
python_embedded.cpp:13: error: variable 'boost::function<void ()(My*),
std::allocator<void> > exec_test' has initializer but incomplete type

but the code snipped from the boost.function doc page works:

---8<---
#include <boost/function.hpp>

struct X {
  void foo() {}
};

int main()
{
        boost::function<void (X*)> f = &X::foo;

        X x;
        f(&x);
}
--->8---

I see no difference that matter, what happens here?

Thanks,
Olaf